The (Last) Hour shall not came till the sun rises from the place of its setting And on the day when it rises from the place of its setting even if all the people together affirmed their faith, it would not be of any avail to one who did not believe previously and derived no good out of his belief.
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لاَ تَقُومُ السَّاعَةُ حَتَّى تَطْلُعَ الشَّمْسُ مِنْ مَغْرِبِهَا فَإِذَا طَلَعَتْ مِنْ مَغْرِبِهَا آمَنَ النَّاسُ كُلُّهُمْ أَجْمَعُونَ فَيَوْمَئِذٍ لاَ يَنْفَعُ نَفْسًا إِيمَانُهَا لَمْ تَكُنْ آمَنَتْ مِنْ قَبْلُ أَوْ كَسَبَتْ فِي إِيمَانِهَا خَيْرًا